Low-temperature synthesis of CeB6 nanowires and nanoparticles as feasible lithium-ion anode materials
作者:Wang, Z (Wang, Zhen)[ 1,2 ] ; Han, W (Han, Wei)[ 1,4 ] ; Kuang, Q (Kuang, Quan)[ 1 ] ; Fan, QH (Fan, Qinghua)[ 1 ] ; Zhao, YM (Zhao, Yanming)[ 1,2,3 ]
ADVANCED POWDER TECHNOLOGY
卷: 31 期: 2 页: 595-603
DOI: 10.1016/j.apt.2019.11.014
出版年: FEB 2020
文献类型:Article
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摘要
Metallic CeB6 nanomaterials were prepared via the low-temperature solution combustion method (nanoparticles) and high-pressure solid state reaction (nanowires). X-ray diffraction patterns and High-resolution transmission electron microscopy images reveal that CeB6 nanoparticles are highly crystalline and CeB6 nanowires are single crystals. The X-ray photoelectron spectroscopy analysis indicates that the cerium is present in the +3 and +4 mixed-valence state in CeB6. As lithium-ion anodes, CeB6 nanowires (nanoparticles) electrode achieves a capacity of similar to 531 (338) mA h g(-1) in the initial cycle and keeps a reversible capacity of similar to 225 (185) mA h g(-1) after 60 cycles. CeB6 nanowires are tested for 6000 cycles at 1000 mA g(-1), which shows a specific capacity approaching to the capacity at 100 mA g(-1) in spite of fluctuation within a narrow range, and keep similar to 168 mA h g(-1) after 6000 cycles, indicating a stable cycling performance owing to the excellent metal-like conductivity of (similar to 5.67 x 10(3) S m(-1)). The reason of capacity rising is that the reduction and oxidation levels of CeB6 electrodes are improved after the 2nd cycle with Li+ insertion/extraction. Meanwhile, kinetic analysis reveals that the Li+ storage mechanism is mainly controlled by a surface capacitive behavior. (C) 2019 The Society of Powder Technology Japan. Published by Elsevier B.V. and The Society of Powder Technology Japan. All rights reserved.
关键词
作者关键词:Cerium hexaboride; Lithium-ion battery; Anode; Nanowire; Nanoparticle
KeyWords Plus:HIGH-CAPACITY ANODE; ELECTROCHEMICAL PERFORMANCE; SINGLE-CRYSTALS; ENERGY-STORAGE; BATTERY; TRANSPORT; OXIDE
作者信息
通讯作者地址: Zhao, YM (通讯作者)
显示更多South China Univ Technol, Dept Phys, Guangzhou 510641, Peoples R China.
地址:
显示更多[ 1 ] South China Univ Technol, Dept Phys, Guangzhou 510641, Peoples R China
[ 2 ] South China Inst Collaborat Innovat, Dongguan 523808, Peoples R China
显示更多[ 3 ] South China Univ Technol, Guangdong Prov Key Lab Adv Energy Storage Mat, Guangzhou 510640, Peoples R China
显示更多[ 4 ] Huazhong Univ Sci & Technol, Sch Mat Sci & Engn, Wuhan 430074, Peoples R China
电子邮件地址:zhaoym@scut.edu.cn
基金资助致谢
基金资助机构显示详情授权号
National Natural Science Foundation of China
51672086
Science and Technology Bureau of Guangdong Government
2017B030308005
Foundation of the Science and Technology Bureau from Dongguan Government
2019622163008
Fundamental Research Funds for the Central Universities
2018MS63
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出版商
ELSEVIER, RADARWEG 29, 1043 NX AMSTERDAM, NETHERLANDS
期刊信息
Impact Factor (影响因子): Journal Citation Reports
类别 / 分类
研究方向:Engineering
Web of Science 类别:Engineering, Chemical